Hybrid Photonic Crystal Cavity as a Sensitive Label-Free Biosensor

被引：0
作者：
Zadeh, Fatemeh Rahman [1 ]
Kaatuzian, Hassan [1 ]
Danaie, Mohammad [2 ]
机构：
[1] Amirkabir Univ Technol, Elect Engn Dept, Photon Res Lab, Tehran, Iran
[2] Semnan Univ, Fac Elect & Comp Engn, Semnan, Iran
来源：
2019 27TH IRANIAN CONFERENCE ON ELECTRICAL ENGINEERING (ICEE 2019) | 2019年
关键词：
Photonic crystal; Biosensor; Photonic crystal biosensor; Highly sensitive biosensor; Quality factor;
D O I：
10.1109/iraniancee.2019.8786436
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a two-dimensional (2D) photonic crystal (PC) structure with a triangular lattice is designed for using as a biosensor. It has the ability to detect bio-targets with refractive indices between 1.33 (water) and 1.5. As the refractive indices of sensitive holes change, a significant shift in the peak of transmission is observed. This structure consists of air holes in silicon slab with 0.48a thickness and 10a x 10a mu m(2) active area which has band gap and waveguide modes for TE polarization. Finite difference time domain (FDTD) and plane wave expansion (PWE) methods have been used for the analysis. We've used effective refractive index of silicon for 2D simulation. The simulation results yield a maximum sensitivity of 300 nm/RIU and a quality factor of 418. These results compared with previous experimental or simulated results show considerable improvements.
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页码：18 / 22
页数：5
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